#mian{
    position: relative;
    background-color: whitesmoke;
    border: 3px solid #dddddd;
    width: 1200px;
    height: 1000px;
    margin: 10px auto;
    margin-bottom: -100px;
}

/*商品评论*/
.content{
    background-color: white;
    border: 10px solid gainsboro;
    box-shadow: 5px 5px 10px black;
    width: 90%;
    height: 90%;
    margin:0 auto;
    position: relative;
    top: 5%;
}
.content_child{
    position: relative;
    top: 50px;
    background-color: white;
    border: 1px solid #e8e8e8;
    width: 90%;
    height: 200px;
    margin: 0 auto;
}
.span1 img{
    width: inherit;
    height: inherit;
}
.span1{
    position: absolute;
    display: inline-block;
    background-color: #e8e8e8;
    width: 150px;
    height: 150px;
    top: 25px;
    left: 30px;

}
.span2{
    position: absolute;
    display: inline-block;
    background-color: #e8e8e8;
    width: 450px;
    height: 150px;
    text-align: left;
    top: 25px;
    left: 330px;
}
.span3 img,.span4 img{
    position: absolute;
    display: inline-block;
    width: 50px;
    height: 50px;
    /*background-color: black;*/
}
.span3 p,.span4 p{
    position: absolute;
    text-align: center;
    padding-top: 5px;
    width: 30px;
    height: 25px;
    display: inline-block;
    right: 30px;
    top: -5px;
    border:  1px solid black;
}
.span3 p{
    top: 20px;
}
.span3 button{
    position: relative;
    top: 10px;
}
.span3,.span4{
    position: absolute;
    /*background-color: black;*/
    /*border: 1px solid black;*/
    width: 130px;
    height: 50px;
    top: 25px;
    right: 30px;
}
.span4{
    top:120px;
}
#title{
    position: absolute;
    top: -15px;
    left: 500px;
}
#limit{
    /*background-color: #e8e8e8;*/
    position: relative;
    top: 60px;
    width: 300px;
    margin: 0 auto;
    text-align: center;
}
.a3{
    margin-left: -6px;
    text-decoration: none;
    list-style-type: none;
    color: black;
    position: relative;
    /*border: 1px solid black;*/
    top: -10px;
    border-radius: 3px;
    display: inline-block;
    text-align: center;
    width: 50px;
    height: 30px;
    padding-top: 10px;
}
.a3:visited{
    color: black;
}
.a3:link{
    color: black;
}
.a3:hover{
    color: darkorange;
}